Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Probabilities* of delivering an infant too small or too large for gestational age by gestational weight gain in women with a normal† body mass index (BMI), Nanjing, China. *Logistic regression analyses with cubic splines adjusted by maternal age, parity and gestational weeks. †BMI ≥ 18.5 but <23.9 kg/m2.
